Fujitsu AUXB24LALH Installation guide

Brand: Fujitsu

Model: AUXB24LALH

Category: Split-system air conditioners

Type: Installation guide

This manual is also suitable for

PART NO. 9371022192-04

English

INSTALLATION MANUAL

VRF SYSTEM

INDOOR UNIT

Compact Cassette Type

For authorized service personnel only.

Contents

1. SAFETY PRECAUTIONS ............................................. 2

2. ABOUT THE UNIT

2.1. Precautions for using the R410A refrigerant .......... 2

2.2. Special tool for R410A ............................................ 2

2.3. Accessories ............................................................ 2

2.4. Optional parts ......................................................... 3

3. INSTALLATION WORK

3.1. Selecting an installation location ............................ 3

3.2. Installation dimensions ........................................... 4

3.3. Discharge direction setting ..................................... 4

3.4. Installing the unit .................................................... 5

PIPE INSTALLATION

4.1. Selecting the pipe material ..................................... 6

4.2. Pipe requirement .................................................... 6

4.3. Flare connection (pipe connection) ........................ 6

4.4. Installing heat insulation ......................................... 7

5. INSTALLING DRAIN PIPES .......................................... 7

6. ELECTRICAL WIRING

6.1. Electrical requirement ............................................ 9

6.2. Wiring method ...................................................... 10

6.3. Unit wiring ............................................................ 10

6.4. Connection of wiring ............................................. 12

6.5. External input and external output

(Optional parts) .................................................... 13

7. FIELD SETTING

7.1. Setting the address .............................................. 15

7.2. Custom code setting ............................................ 16

7.3. Function setting .................................................... 17

8. DECORATION PANEL INSTALLATION

8.1. Remove the intake grille ....................................... 18

8.2. Install panel to indoor unit .................................... 19

8.3. Attach the intake grille .......................................... 19

9. TEST OPERATION

9.1.

Test operation using PCB (Outdoor unit) ....................19

9.2.

Test operation using Remote Controller ......................19

10. CHECK LIST ............................................................... 20

11. ERROR CODES ......................................................... 20

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1. SAFETY PRECAUTIONS

• Be sure to read this Manual thoroughly before installation.

• The warnings and precautions indicated in this Manual

contain important information pertaining to your safety. Be

sure to observe them.

• Hand this Manual, together with the Operating Manual to

the customer.

Request the customer to keep them on hand for future

use, such as for relocating or repairing the unit.

WARNING!

This mark indicates procedures which,

if improperly performed, might lead to

the death or serious injury of the user.

• Request your dealer or a professional installer to install

the unit in accordance with this Manual.

An improperly installed unit can cause serious accidents

such as water leakage, electric shock, or ﬁ re.

If the unit is instruction in disregard of the instructions

in the Installation Manual, it will void the manufacturer’s

warranty.

• Do not turn ON the power until all work has been

completed.

Turning ON the power before the work is completed can

cause serious accidents such as electric shock or ﬁ re.

• If refrigerant leaks while work is being carried out, ventilate

the area.

If the refrigerant comes in contact with a ﬂ ame, it produces

a toxic gas.

• Installation work must be performed in accordance with

national wiring standards by authorized personnel only.

• Except for EMERGENCY, never turn off main as well as

sub breaker of the indoor units during operation. It will

cause compressor failure as well as water leakage. First,

stop the indoor unit by operating the control unit, converter

or external input device and then cut the breaker.

Make sure to operate through the control unit, converter

or external input device.

When the breaker is designed, locate it at a place where

the users cannot start and stop in the daily work.

CAUTION!

This mark indicates procedures which,

if improperly performed, might possibly

result in personal harm to the user, or

damage to property.

2. ABOUT THE UNIT

2.1. Precautions for using the R410A

refrigerant

WARNING

• Do not introduce any substance other than the prescribed

refrigerant into the refrigeration cycle.

If air enters the refrigeration cycle, the pressure in the

refrigeration cycle will become abnormally high and cause the

piping to rupture.

• If there is a refrigerant leakage, make sure that it does not

exceed the concentration limit.

If a refrigerant leakage exceeds the concentration limit, it can

lead to accidents such as oxygen starvation.

• Do not touch refrigerant that has leaked from the refrigerant

pipe connections or other area. Touching the refrigerant directly

can cause frostbite.

• If a refrigerant leakage occurs during operation, immediately

vacate the premises and thoroughly ventilate the area.

If the refrigerant comes in contact with a ﬂ ame, it produces a toxic

gas.

2.2. Special tool for R410A

WARNING

• To install a unit that uses the R410A refrigerant, use dedicated

tools and piping materials that have been manufactured

speciﬁ cally for R410A use.

Because the pressure of the R410A refrigerant is approximately

1.6 times higher than the R22, failure to use dedicated piping

material or improper installation can cause rupture or injury.

Furthermore, it can cause serious accidents such as water

leakage, electric shock, or ﬁ re.

Tool name Contents of change

Gauge

manifold

Pressure is huge and cannot be

measured with a conventional gauge.

To prevent erroneous mixing of other

refrigerants, the diameter of each port

has been changed.

It is recommended to use a gauge

manifold with a high pressure display

range –0.1 to 5.3 MPa and a low

pressure display range –0.1 to 3.8 MPa.

Charging hose

To increase pressure resistance, the

hose material and base size were

changed.

Vacuum pump

A conventional vacuum pump can be

used by installing a vacuum pump

adapter.

Be sure that the pump oil does not

backflow into the system. Use one

capable for vacuum suction of

–100.7 kPa (5 Torr, –755 mmHg).

Gas leakage

detector

Special gas leakage detector for HFC

refrigerant R410A.

2.3. Accessories

WARNING

• For installation purposes, be sure to use the parts supplied by

the manufacturer or other prescribed parts.

The use of non-prescribed parts can cause serious accidents

such as the unit to fall, water leakage, electric shock, or ﬁ re.

• The following installation parts are furnished. Use them as

required.

• Keep the Installation Manual in a safe place and do not discard

any other accessories until the installation work has been

completed.

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Do not discard any accessories needed for installation

until the installation work has been completed.

Name and Shape Q’ty Application

Operating Manual

Installation Manual

(This book)

Binder (Large)

For fixing the

connection pipe (Large

and Small)

Binder (Medium)

For transmission and

remote controller cable

binding.

Coupler heat

insulation

(Small)

For indoor side pipe

joint (Small)

Coupler heat

insulation

(Large)

For indoor side pipe

joint (Large)

Special nut A

(Large flange)

For installing indoor unit

Special nut B

(Small flange)

For installing indoor unit

Template

(Carton top)

For cealing openings

cutting

Also used as packing

Drain hose

For installing drain pipe

VP25 (O.D.32, I.D.25)

Hose Band

For installing drain hose

Drain hose insulation

For installing drain pipe

DECORATION PANEL ACCESSORIES

Name and Shape Q’ty Application

Connector cover

For covering connector

Tapping screw

(M5 × 12mm)

For mounting decoration

panel

Tapping screw

(M4 × 12mm)

For mounting connector

cover

2.4. Optional parts

The following options are available.

• External output wire (P/N 9379529006)

• External input (voltage) wire (P/N 9368779016)

• External input (no voltage) wire (P/N 9368779009)

• Insulation kit for high humidity (UTZ-KXGC)

Install when the condition under the roof is over 80% in

humidity and over 30°C in temperature.

3. INSTALLATION WORK

Especially, the installation place is very important for the split type

air conditioner because it is very difﬁ cult to move from place to

place after the ﬁ rst installation.

3.1. Selecting an installation location

WARNING

• Select installation locations that can properly support the weight

of the indoor. Install the units securely so that they do not topple

or fall.

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CAUTION

• Do not install the unit in the following areas:

• Area with high salt content, such as at the seaside.

It will deteriorate metal parts, causing the parts to fall or the

unit to leak water.

• Area ﬁ lled with mineral oil or containing a large amount of

splashed oil or steam, such as a kitchen.

It will deteriorate plastic parts, causing the parts to fall or the

unit to leak water.

• Area that generates substances that adversely affect the

equipment, such as sulfuric gas, chlorine gas, acid, or

alkali.

It will cause the copper pipes and brazed joints to corrode,

which can cause refrigerant leakage.

• Area that can cause combustible gas to leak, contains

suspended carbon fibers or flammable dust, or volatile

inﬂ ammables such as paint thinner or gasoline.

If gas leaks and settles around the unit, it can cause a ﬁ re.

• Area where animals may urinate on the unit or ammonia may

be generated.

• Do not use the unit for special purposes, such as storing food,

raising animals, growing plants, or preserving precision devices

or art objects.

It can degrade the quality of the preserved or stored objects.

• Do not install where there is the danger of combustible gas

leakage.

• Do not install the unit near a source of heat, steam, or ﬂ ammable

gas.

• Install the unit where drainage does not cause any trouble.

• Install the indoor unit, outdoor unit, power supply cable,

transmission cable, and remote controller cable at least 1 m

away from a television or radio receivers. The purpose of this

is to prevent TV reception interference or radio noise.

(Even if they are installed more than 1 m apart, you could still

receive noise under some signal conditions.)

• If children under 10 years old may approach the unit, take

preventive measures so that they cannot reach the unit.

• Use the “Insulation kit for high humidity” (option), when the

condition under the roof is over 80% in humidity and over 30°C

in temperature. Otherwise, there is a risk of condensation on

the ceiling.

• Decide the mounting position with the customer as

follows:

(1) Install the indoor unit on a place having a sufﬁ cient strength

so that it withstands against the weight of the indoor unit.

(2) The inlet and outlet ports should not be obstructed; the air

should be able to blow all over the room.

(3) Leave the space required to service the air conditioner.

(4) A place from where the air can be distributed evenly

throughout the room by the unit.

(5) Install the unit where connection to the outdoor unit is easy.

(6) Install the unit where the connection pipe can be easily

installed.

(7) Install the unit where the drain pipe can be easily installed.

(8) Install the unit where noise and vibrations are not ampliﬁ ed.

(9) Take servicing, etc., into consideration and leave the spaces.

Also install the unit where the ﬁ lter can be removed.

3.2. Installation dimensions

• Leave the space speciﬁ ed in Fig. A so that the air from the

blower will cover the entire room.

• Install the indoor unit on a place having a sufﬁ cient strength so

that it withstands against the weight of the indoor unit.

• A place from where drainage can be extracted outdoors easily.

WARNING

• Never install in a room where there is the potential of leaking

ﬂ ammable gas. A spark could ignite the gas and cause an

explosion or ﬁ re.

• Avoid installing in a location with high temperature.

• The blower direction can be set for 2 directions or 3 directions.

When using 2-direction or 3-direction blower, follow Fig. B for

the blower direction and space.

• This product can be installed at a height of up to 3.0 m.

Perform the Function Setting on the remote controller in

accordance with the installed height.

Fig. A

Obstruction

1,800mm or more

1,000 mm

or more

1,000 mm

or more

Floor

Strong and durable ceiling

262 mm

or more

H(The maximum height from floor to ceiling)(mm)

Model name

AUXB07 AUXB09 AUXB12 AUXB14 AUXB18 AUXB24

Standard

mode

2,700 2,700 2,700 2,700 2,700 2,700

High Ceiling

mode

- - 3,000 3,000 3,000 3,000

3.3. Discharge direction setting

• The discharge direction can be selected as shown below.

Fig. B

(4 directions)

(3 directions)

100 mm or more

Piping position

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* Select the most appropriate airﬂ ow direction from 3 or

4 directions according to the shape of the room and the

installation position.

* When changing the number of outlets, we recommend using

the optional AIR OUTLET SHUTTER PLATE KIT to close the

outlet.

* For the speciﬁ c closing pattern, please refer to the attached

AIR OUTLET SHUTTER PLATE KIT’S MANUAL. (Do so

before installing the decorative panel as it will be installed on

the body.)

3.4. Installing the unit

Install the air conditioner as follows.

INDOOR UNIT INSTALLATION

(1) Make the holes for installing in the ceiling (Fig. D).

(2)

Install the hanging bolts (M10), refer to the position in Fig. C.

(3) Install special nut A, then special nut B onto the hanging bolt

(Fig. D).

(4) Raise the body and mount its hooks onto the hanging bolt

between the special nuts.

(5) Turn special nut B to adjust the height of the body.

(6) Be sure to leave service access for future service at the

designated position.

Fig. C

530 mm (Hanging bolt position)

540 mm (Hanging bolt position)

570 mm (Indoor unit)

580 – 660 mm (Cealing openings)

700 mm (Decoration Panel)

135 mm 250 mm

150 ~ 200 mm

Min. 450 mm

Service access

75 mm

Min. 450 mm

Fig. D

Drain pipe (O.D. ø25.4)

40 mm 99 mm

102 mm

146 mm

245 mm

30 mm

262 mm

30 mm

58 mm

123 mm

Ceiling

Control box

Liquid pipe

Gas pipe

40 mm

Special nut A

Special nut B

Hook

Hanging bolt

30 mm

or more

After

installing the

body, tighten

the nuts.

19 mm

Ceiling

Leveling

• Using a level, or vinyl hose ﬁ lled with water, ﬁ ne adjust so that

the body is level.

• Inclined installation so as the drain pipe side is higher may

cause a malfunction of the ﬂ oat switch, and may cause water

leakage.

Vinyl hoses

Drain pipe

WARNING

• Install the air conditioner in a location which can withstand a

load do at least 5 times the weight of the main unit and which will

not amplify sound or vibration. If the installation location is not

strong enough, the indoor unit may fall and cause injuries.

• If the job is done with the panel frame only, there is a risk that

the unit will come loose. Please take care.

• When fastening the hangers, make the bolt positions

uniform.

• Perform ﬁ nal tightening by tightening the double nut ﬁ rmly. The

product may fall if not installed properly.

• Using a level, or vinyl hose ﬁ lled with water, ﬁ ne adjust so that

the body is level.

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4. PIPE INSTALLATION

CAUTION

• Be more careful that foreign matter (oil, water, etc.) does

not enter the piping than with refrigerant R410A models.

Also, when storing the piping, securely seal the openings by

pinching, taping, etc.

• While welding the pipes, be sure to blow dry nitrogen gas

through them.

4.1. Selecting the pipe material

CAUTION

• Do not use existing pipes.

• Use pipes that have clean external and internal sides without

any contamination which may cause trouble during use, such

as sulfur, oxide, dust, cutting waste, oil, or water.

• It is necessary to use seamless copper pipes.

Material : Phosphor deoxidized seamless copper pipes

It is desirable that the amount of residual oil is less than

40 mg/10 m.

• Do not use copper pipes that have a collapsed, deformed,

or discolored portion (especially on the interior surface).

Otherwise, the expansion valve or capillary tube may become

blocked with contaminants.

• Improper pipe selection will degrade performance. As an air

conditioner using R410A incurs pressure higher than when

using conventional refrigerant, it is necessary to choose

adequate materials.

•

Thicknesses of copper pipes used with R410A are as

shown in the table.

• Never use copper pipes thinner than those indicated in the

table even if they are available on the market.

Thicknesses of Annealed Copper Pipes (R410A)

Pipe outside diameter [mm (in.)] Thickness [mm]

6.35 (1/4) 0.80

9.52 (3/8) 0.80

12.70 (1/2) 0.80

15.88 (5/8) 1.00

19.05 (3/4) 1.20

4.2. Pipe requirement

CAUTION

• Refer to the Installation Manual of the outdoor unit for

description of the length of connecting pipe or for difference

of its elevation.

• Use pipe with water-resistant heat insulation.

CAUTION

• Install heat insulation around both the gas and liquid pipes.

Failure to do so may cause water leaks.

Use heat insulation with heat resistance above 120 °C.

(Reverse cycle model only)

In addition, if the humidity level at the installation location

of the refrigerant piping is expected to exceed 70 %, install

heat insulation around the refrigerant piping. If the expected

humidity level is 70-80 %, use heat insulation that is 15 mm or

thicker and if the expected humidity exceeds 80 %, use heat

insulation that is 20 mm or thicker. If heat insulation is used

that is not as thick as speciﬁ ed, condensation may form on

the surface of the insulation. In addition, use heat insulation

with heat conductivity of 0.045 W/(m·K) or less (at 20 °C).

4.3. Flare connection (pipe connection)

WARNING

• Tighten the ﬂ are nuts with a torque wrench using the speciﬁ ed

tightening method. Otherwise, the ﬂ are nuts could break after

a prolonged period, causing refrigerant to leak and generate

a hazardous gas if the refrigerant comes into contact with a

ﬂ ame.

4.3.1. Flaring

• Use special pipe cutter and ﬂ are tool exclusive for R410A.

(1) Cut the connection pipe to the necessary length with a pipe

cutter.

(2) Hold the pipe downward so that cuttings will not enter the pipe

and remove any burrs.

(3) Insert the ﬂ are nut (always use the ﬂ are nut attached to the

indoor and outdoor units respectively) onto the pipe and

perform the ﬂ are processing with a ﬂ are tool. Use the special

R410A ﬂ are tool, or the conventional ﬂ are tool. Leakage of

refrigerant may result if other ﬂ are nuts are used.

(4) Protect the pipes by pinching them or with tape to prevent dust,

dirt, or water from entering the pipes.

Pipe outside

diameter

[mm (in.)]

Dimension A [mm]

Dimension B

0.4

[mm]

Flare tool for R410A,

clutch type

6.35 (1/4)

0 to 0.5

9.1

9.52 (3/8) 13.2

12.70 (1/2) 16.6

15.88 (5/8) 19.7

19.05 (3/4) 24.0

When using conventional ﬂ are tools to ﬂ are R410A pipes, the

dimension A should be approximately 0.5 mm more than indicated

in the table (for ﬂ aring with R410A ﬂ are tools) to achieve the

speciﬁ ed ﬂ aring. Use a thickness gauge to measure the dimension

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Width across

flats

Pipe outside

diameter [mm (in.)]

Width across flats

of Flare nut [mm]

6.35 (1/4) 17

9.52 (3/8) 22

12.70 (1/2) 26

15.88 (5/8) 29

19.05 (3/4) 36

4.3.2. Bending pipes

• If pipes are shaped by hand, be careful not to collapse them.

• Do not bend the pipes in an angle more than 90°.

• When pipes are repeatedly bend or stretched, the material will

harden, making it difﬁ cult to bend or stretch them any more.

• Do not bend or stretch the pipes more than 3 times.

CAUTION

• To prevent breaking of the pipe, avoid sharp bends.

• If the pipe is bent repeatedly at the same place, it will break.

4.3.3. Pipe connection

When the ﬂ are nut is tightened properly by your hand, hold the

body side coupling with a separate spanner, then tighten with a

torque wrench. (See the table below for the ﬂ are nut tightening

torques.)

CAUTION

• Hold the torque wrench at its grip, keeping it in the right angle

with the pipe, in order to tighten the ﬂ are nut correctly.

• Tighten the ﬂ are nuts with a torque wrench using the speciﬁ ed

tightening method. Otherwise, the ﬂ are nuts could break after

a prolonged period, causing refrigerant to leak and generate

a hazardous gas if the refrigerant comes into contact with a

ﬂ ame.

Flare nut [mm (in.)]

Tightening torque [N·m (kgf·cm)]

6.35 (1/4) dia. 16 to 18 (160 to 180)

9.52 (3/8) dia. 32 to 42 (320 to 420)

12.70 (1/2) dia. 49 to 61 (490 to 610)

15.88 (5/8) dia. 63 to 75 (630 to 750)

19.05 (3/4) dia. 90 to 110 (900 to 1,100)

4.4. Installing heat insulation

Install the heat insulation material after performing a refrigerant

leak check (see the Installation Manual for the outdoor unit for

details).

COUPLER HEAT INSULATION

• Insulate by the coupler heat insulation (Accessories) around

the gas pipe and liquid pipe of indoor side.

• After installing the coupler heat insulation, wrap both end with

vinyl tape so that there is no gap.

• After afﬁ xing the coupler heat insulation, secure it with 2 bin-

ders (large), one on each end of the insulation.

• Make sure that the binders overlap the heat insulation pipe.

Coupler heat

insulation

(Accessories)

Binder (Large)

(Accessories)

Heat insulation

Cover this portion with

heat insulation.

CAUTION

• After checking for gas leaks (refer to the Installation Manual

of the outdoor unit), perform this section.

• Install heat insulation around both the large (gas) and small

(liquid) pipes. Failure to do so may cause water leaks.

5. INSTALLING DRAIN PIPES

• Install the drain pipe with downward gradient (1/100 to 1/50)

and so there are no rises or traps in the pipe. Unsmooth

draining caused by accumulated water ﬂ ow in the pipe may

cause clogged drain.

• Use general hard polyvinyl chloride pipe (VP25) [outside

diameter 32 mm].

• When the pipe is long, install supporters.

• Do not perform air bleeding. Drainage may be blown out.

• Always heat insulate the indoor side of the drain pipe.

• If it is impossible to have sufﬁ cient gradient of pipe, perform

drain lift-up.

Pipe size

Drain pipe VP25 (O.D. 32 mm)

Hanging ﬁ ttings

VP25 (O.D. 32 mm)

Downward gradient 1/100 to 1/50

1.5 to 2 m

Rise

PROHIBITED:

Trap Air bleeding

When lifting up drain:

• Height of inclined pipe should be less than 700 mm from the

ceiling. A rise dimension over this range will cause leakage.

• Lift up the pipe vertically at the position of 300 mm or less from

the unit.

En-8

VP25 (O.D. 32 mm)

local arrangement

VP30 (O.D. 38 mm) or more

Downward gradient 1/100 to 1/50

Downward gradient

1/100 to 1/50

300 mm or less

700 mm or less

Horizontal or

upward gradient

WARNING

• Do not insert the drain piping into the sewer where sulfurous

gas occurs. (Heat exchange erosion may occur)

• Insulate the parts properly so that water will not drip from the

connection parts.

• Check for proper drainage after the construction by using the

visible portion of transparent drain port and the drain piping

ﬁ nal outlet on the body.

CAUTION

• Do not apply adhesive agent on the drain port of the body.

(Use the attached drain hose and connect the drain piping)

Working procedure

(1) Install the attached drain hose to the drain port of the body.

Install the hose band from the top of the hose within the

graphic display area.

(2) Use vinyl adhesive agent to glue the drain piping (PVC pipe

VP25) which is prepared on site or elbow socket.

(Apply color adhesive agent evenly until the gauge line and

seal)

(3) Check the drainage. (See separate diagram)

(4) Install the heat insulation.

(5) Use the attached heat insulation to insulate the drain port

and band parts of the body.

Install the knob faces

upward (Accessories)

Attached

hose band

Attached

heatinsulation

Attached drain hose

(Accessories)

Locally

arrangedviny

pipe

(a) Top view

Drain hose

Hose band

20mm

Transparent

visible portion

5~10mm

(b) Side view

Applying area

of adhesive

VP25

Gauge line

4 mm or less

35 mm

Wind the attached heat insulation

around the hose band

Make sure the

alignment is on top

(d) Top view

Make sure there

are no gaps

Note: Check for drainage

Pour about 1 liter of water from the position shown in the diagram or

from the airﬂ ow outlet to the dew tray. Check for any abnormalities

such as strange noises and whether the drain pump functions

normally.

En-9

Watering pot

Drain pipe

Wire cover

Screw

6. ELECTRICAL WIRING

WARNING

• Electrical work must be performed in accordance with this

Manual by a person certiﬁ ed under the national or regional

regulations. Be sure to use a dedicated circuit for the unit.

An insufﬁ cient power supply circuit or improperly performed

electrical work can cause serious accidents such as electric

shock or ﬁ re.

• Before starting work, check that power is not being supplied to

the indoor unit and outdoor unit.

• For wiring, use the prescribed type of cables, connect them

securely, making sure that there are no external forces of the

cables applied to the terminal connections.

Improperly connected or secured cables can cause serious

accidents such as overheating the terminals, electric shock,

or ﬁ re.

• Securely install the electrical box cover on the unit.

An improperly installed electrical box cover can cause serious

accidents such as electric shock or ﬁ re through exposure to

dust or water.

• Install sleeves into any holes made in the walls for wiring.

Otherwise, a short circuit could result.

• Use the included connection cables and power cables or

ones speciﬁ ed by the manufacturer. Improper connections,

insufﬁ cient insulation, or exceeding the allowable current can

cause electric shock or ﬁ re.

• Do not modify the power cables, use extension cables, or use

any branches in the wiring. Improper connections, insufﬁ cient

insulation, or exceeding the allowable current can cause electric

shock or ﬁ re.

• Match the terminal block numbers and connection cable colors

with those of the outdoor unit. Erroneous wiring may cause

burning of the electric parts.

• Securely connect the connection cables to the terminal board.

In addition, secure the cables with wiring holders. Improper

connections, either in the wiring or at the ends of the wiring,

can cause a malfunction, electric shock, or ﬁ re.

• Always fasten the outside covering of the connection cable with

the cable clamp. (If the insulator is chafed, electric leakage may

occur.)

• Install a ground leakage breaker. In addition, install the ground

leakage breaker so that the entire AC main power supply is

cut off at the same time. Otherwise, electric shock or ﬁ re could

result.

• Always connect the ground cable.

Improper grounding work can cause electric shocks.

• Install the remote controller cables so as not to be direct touched

with your hand.

• Perform wiring work in accordance with standards so that the

air conditioner can be operated safely and positively.

• Connect the connection cable ﬁ rmly to the terminal board.

Imperfect installation may cause a ﬁ re.

• If the supply cord is damaged, it must be replaced by the

manufacturer, its service agent or similarly qualiﬁ ed persons

in order to avoid a hazard.

CAUTION

• Ground the unit.

Do not connect the ground cable to a gas pipe, water pipe,

lightning rod, or a telephone ground cable.

Improper grounding may cause electric shock.

• Do not connect power supply cables to the transmission

or remote controller terminals, as this will damage the

product.

• Never bundle the power supply cable and transmission

cable, remote control cable together.

Separate these cable by 50 mm or more.

Bundling these cables together will cause miss operation or

breakdown.

• When handling PCB, static electricity charged in the body may

cause malfunction of the PCB. Follow the cautions below:

• Establish a ground for the indoor and outdoor units and

peripheral devices.

• Cut power (breaker) off.

• Touch metal part of the indoor and outdoor units for more

than 10 seconds to discharge static electricity charged in

the body.

• Do not touch terminals of parts and patterns implemented

on PCB.

6.1. Electrical requirement

Voltage rating

230 V

Operating range

198 to 264 V

• Select the power cable type and size in accordance with

relevant local and national regulations.

• Speciﬁ cations for local wiring power cord and branch wiring are

in compliance with local code.

• Max. wire length: Set a length so that the voltage drop is less

than 2%. Increase the wire diameter when the wire length is

long.

Refer to the table for the breaker speciﬁ cations of each

installation condition. Perform the power crossover wiring within

the range of the same refrigerant system. When the crossover

wiring is done, make a connection for indoor units to satisfy

conditions A and B below.

En-10

A. Current breaker requirements

Model MCA MFA

AUXB07LALH

0.20 A

20 A

AUXB09LALH

0.20 A

AUXB12LALH

0.24 A

AUXB14LALH

0.29 A

AUXB18LALH

0.30 A

AUXB24LALH

0.75 A

MCA: Minimum Circuit Ampacity

MFA: Maximum Fuse Ampacity

When the power crossover wiring is done, make it so that the

total of the MCA of the connected indoor units does not exceed

the 15 A.

If the capacity of connected indoor units exceeds the upper limit,

either add breakers or use a breaker with a greater capacity.

B. Earth leakage breaker requirements

Breaker capacity

The number of connectable indoor

units

30 mA, 0.1 sec or less 12 or less*

100 mA, 0.1 sec or less 13 to 40

200 mA, 0.1 sec or less 41 to 48

If the total number of units connected to the breaker exceeds

12, either add a 30mA breaker, or use breakers with a greater

capacity.

Recommended

cable size

(mm

)

Cable type Remark

Power

supply cable

2.5

Type60245

IEC57 or

equivalent

1ø 50 Hz

198–264 V

2 Cable +

ground

Transmission

able

0.33

LONWORKS

compatible

cable

22 AWG LEVEL

4 (NEMA)

non-polar 2

core, twisted

pair solid core

diameter 0.65

Remote

controller

cable

0.33

Sheathed

PVC cable*

Polar 3 core

Twisted pair

*: Use shielded cable in accordance with local rules for remote

controller cable.

6.2. Wiring method

(EXAMPLE)

POWER SUPPLY

OUTDOOR UNIT

TRANSMISSION

TRANSMISSION TRANSMISSION

POWER SUPPLY

REMOTE

CONTROLLER

(MASTER)

REMOTE

CONTROLLER

(SLAVE)

REMOTE

CONTROLLER

REMOTE CONTROL

INDOOR UNIT

BREAKER

POWER SUPPLY REMOTE CONTROL POWER SUPPLY REMOTE CONTROL

BREAKER BREAKER

TRANSMISSION

[Crossover wiring of power supply]

Indoor unit

Indoor unit Indoor unit

Power supply

Pull box

Breaker

Power supply

6.3. Unit wiring

• Before attaching the cable to terminal block.

6.3.1. Power supply cable

Adjust the length of power supply cable to avoid excessive

tension with referring ﬁ gure below.

20 mm

30 mm

Power supply cable

Earth cable

A. For solid core wiring

(1) To connect the electrical terminal, follow the below diagram

and connect after looping it around the end of the cable.

(2) Use the speciﬁ ed cables, connect them securely, and fasten

them so that there is no stress placed on the terminals.

(3) Use an appropriate screwdriver to tighten the terminal

screws.

Do not use a screwdriver that is too small, otherwise, the

screw heads may be damaged and prevent the screws from

being properly tightened.

(4) Do not tighten the terminal screws too much, otherwise, the

screws may break.

(5) See the table for the terminal screw tightening torques.

(6) Please do not ﬁ x 2 power supply cables with 1 screw.

En-11

Strip 25 mm

Loop

Screw with spe-

cial washer

Screw with

special washer

Cable end

(Loop)

Cable end

(Loop)

Cable

Terminal block

WARNING

• When using solid core cables, do not use the ring terminal. If

you use the solid core cables with the ring terminal, the ring

terminal's pressure bonding may malfunction and cause the

cables to abnormally heat up.

B. For strand wiring

(1) Use ring terminals with insulating sleeves as shown in the

ﬁ gure below to connect to the terminal block.

(2) Securely clamp the ring terminals to the cables using an

appropriate tool so that the cables do not come loose.

(3) Use the speciﬁ ed cables, connect them securely, and fasten

them so that there is no stress placed on the terminals.

(4) Use an appropriate screwdriver to tighten the terminal screws.

Do not use a screwdriver that is too small, otherwise, the screw

heads may be damaged and prevent the screws from being

properly tightened.

(5) Do not tighten the terminal screws too much, otherwise, the

screws may break.

(6) See the table for the terminal screw tightening torques.

(7) Please do not ﬁ x 2 power supply cables with 1 screw.

Strip 10 mm

Sleeve

Screw with spe-

cial washer

Screw with

special washer

Ring terminal

Cable

Terminal block

Ring terminal

Ring

terminal

WARNING

• Use ring terminals and tighten the terminal screws to the

speciﬁ ed torques, otherwise, abnormal overheating may be

produced and possibly cause heavy damage inside the unit.

Tightening torque

M4 screw

(Power supply /L, N, GND)

1.2 to 1.8N

•m

(12 to 18 kgf•cm)

6.3.2. Transmission and Remote controller cable

30 mm

40 mm

Transmission cable

Shielded

cable (no ﬁ lm)

30 mm

Remote controller cable

• Connect remote controller and transmission cables as

shown in Fig. C.

Fig. C

OK NO GOOD NO GOOD

Different

diameter

Connect to

1 side

WARNING

• Tighten the terminal screws to the speciﬁ ed torques, otherwise,

abnormal overheating may be produced and possibly cause

heavy damage inside the unit.

Tightening torque

M3 screw

(Transmission /X1, X2)

(Remote controller /Y1, Y2, Y3)

0.5 to 0.6N•m

(5 to 6 kgf

•cm)

CAUTION

• To peel the ﬁ lm from the lead cable, use a dedicated tool that

will not damage the conductor cable.

• When installing a screw on the terminal block, do not cut

the wire by overtightening the screw. On the other hand, an

undertightened screw can cause faulty contact, which will

lead to a communication failure.

En-12

6.4. Connection of wiring

Remove the control box cover and install the connection cable.

(1) Remove the control box cover and install each connection cable.

Screw

Control box cover

(2) Connect the connection cable, with the binder.

Cable clamp L, N: Power supply cable

Remote controller cable

Y1: Red

Y2: White

Y3: Black

Binder

(Accessories)

X1, X2:

Transmission cable

(3) Install control box cover.

CAUTION

Do not bundle the remote controller cable, or wire the remote controller cable in parallel, with the indoor unit connection cable (to the

outdoor unit) and the power supply cable. It may cause erroneous operation.

En-13

6.5. External input and external output

(Optional parts)

Controller PCB

Input No Voltage

terminal (CN17)

Input Voltage terminal (CN6)

Output terminal (CN16)

(1) External input terminals

• Indoor unit can be Start/Stop or Emergency stop, Forced

stop by using indoor unit PCB CN6 or CN17.

Wiring methods and speciﬁ cations

• A twisted pair cable (22AWG) should be used. Maximum

length of cable is 150 m.

* Use an external input and output cable with appropriate

external dimension, depending on the number of cables to

be installed.

• The wire connection should be separate from the power

cable line.

• Input selection

Use either one of these types of terminal according to the

application. (Both types of terminals cannot be used

simultaneously.)

• Voltage terminal ([CN6])

When a power supply must be provided at the input device

you want to connect, use the voltage terminal ([CN6]).

Input device 1Input device 2

Load

resistance

Load

resistance

DC power supply

12 - 24V

connected unit

P.C . B

CN6

Make the power supply DC12 to 24V. Select a power supply

capacity with an ample surplus for the connected load.

Do not impress a voltage exceeding 24V across pins 1-2, and

1-3.

*a The allowable current is DC5~10mA. (Recommended:

DC5mA)

Provide a load resistance such that the current becomes

DC10mA or less.

Select very low current use contacts (usable at DC12V,

DC1mA or less).

*b The polarity is [+] for pin 1 and [-] for pin 2 and 3.

Connect correctly.

When connected to voltage terminals of multiple indoor units

with a connected unit, be sure to make a branch outside the

indoor unit using a pull box, etc. as shown on below example.

DC power

supply 12-24V

connected unit

Load

resistance

P.C . B

CN6

P.C . B

Input device 1Input device 2

Indoor unitIndoor unitIndoor unit

Load

resistance

• No voltage terminal ([CN17])

When a power supply is unnecessary at the input device

you want to connect, use the no voltage terminal ([CN17]).

P.C . B

GND

Ch 1

Ch 2

CN17

connected unit

*c Select very low current use contacts (usable at DC12V,

DC1mA or less).

*d The wiring is different from voltage terminals. Be sufﬁ ciently

careful when wiring.

When connected to no voltage terminals of multiple indoor units

with a connected unit, insulate each indoor unit with relay, etc.

as shown on below example.

When connected to multiple indoor units directly, it will cause

breakdown.

Power supply for relay

Indoor unit Indoor unit Indoor unit

Input device 2

Input device 1

K1~K6: Relay

(Device for DC Current)

P.C . B

CN17

En-14

• Selection method of functions

“Start/Stop” mode or “Emergency stop” mode, “Forced stop”

mode can be selected with function setting of indoor unit.

(2) External output terminals

• When picking up output signals for operating status,

abnormal conditions or indoor unit status.

Wiring methods and speciﬁ cations

• A twisted pair cable (22AWG) should be used. Maximum

length of cable is 150 m.

• Use an external input and output cable with appropriate

external dimension, depending on the number of cables to

be installed.

• The wire connection should be separate from the power

cable line.

P.C . B

CN16

DC power supply

12 - 24V *2

Connected load

connected unit

Connected load

*2 Provide a DC12 to 24V power supply. Select a power

supply capacity with an ample surplus for the connected

load.

*3 The allowable current is 30mA or less. Provide a load

resistance such that the current becomes 30mA or less.

Polarity is [+] for pin 1 and [-] for pins 2-4. Connect correctly.

Do not impress a voltage exceeding 24V across pins 1-2, 1-3,

and 1-4.

Operation behavior

Connector Output voltage Status

CN16

External

output1

Pins 1-2

0V Stop

DC 12-24 V *2 Operation

External

output2

Pins 1-3

0V Normal

DC 12-24 V *2 Error

External

output3

Pins 1-4

0V Indoor unit fan stop

DC 12-24 V *2

Indoor unit fan

operation

Operation behavior

• Input signal type

The input signal type can be selected.

It is switched by Dip-sw on the indoor

unit PCB.

Dip-sw [Set 2-2] Input signal type

OFF Edge

ON Pulse

• When function setting is “Start/Stop” mode.

[In the case of “Edge” input]

Connector Input signal Command

Ch1 of

CN6 or CN17

OFF → ON Operation

ON → OFF Stop

[In the case of “Pulse” input]

Connector Input signal Command

CN6 or CN17

Ch1 OFF → ON Operation

Ch2 OFF → ON Stop

* The last command has priority.

* The indoor units within the same remote controller group

operates in the same mode.

• When function setting is “Emergency stop” mode.

[In the case of “Edge” input]

Connector Input signal Command

Ch1 of

CN6 or CN17

OFF → ON Emergency stop

ON → OFF Normal

[In the case of “Pulse” input]

Connector Input signal Command

CN6 or CN17

Ch1 OFF → ON

Emergency

stop

Ch2 OFF → ON Normal

* All indoor units of same refrigerant system stops when

Emergency stop operates.

• When function setting is “Forced stop” mode.

[In the case of “Edge” input]

Connector Input signal Command

Ch1 of

CN6 or CN17

OFF → ON Forced stop

ON → OFF Normal

[In the case of “Pulse” input]

Connector Input signal Command

CN6 or CN17

Ch1 OFF → ON Forced stop

Ch2 OFF → ON Normal

* When the forced stop is triggered, indoor unit stops and

Start/Stop operation by a remote controller is restricted.

When forced stop function is used with forming a

remote controller group, connect the same equipment

to each indoor unit within the group.

Pulse

The width of pulse

must be longer

than 200msec.

Edge

En-15

(3) Connection methods

• Wire modiﬁ cation

Use a tool to cut off the terminal on the end of the

wire, and then remove the insulation from the cut end

of the wire.

Connect the wire with connecting wire with solder.

Important: Be sure to insulate the connection between the wires.

Option parts

External input /output wire

Insulated connection

Field supply

Input Voltage

terminal (CN6)

Controller PCB

Input No Voltage

terminal (CN17)

Output terminal

(CN16)

Binder (Field supply)

:Bind to the transmission cable

Transmission cable

7. FIELD SETTING

There are 3 methods for address setting by FIELD

SETTING as follows.

Set by either of the methods.

Each setting method is described (1) to (3) below.

(1) IU AD

, REF AD SW settings

... This section (7.1. Setting the

address)

(2) Remote controller settings ....

Refer to the wired or wireless

remote controller manual for

detailed setting information.

(Set IU AD, REF AD SW to 0)

(3) Automatic address settings ...

Refer to the outdoor unit

manual for detailed setting

information. (Set IU AD, REF

AD SW to 0)

CAUTION

• Be sure to turn OFF the power before performing the ﬁ eld

setting.

7.1. Setting the address

CAUTION

• Use an insulated screwdriver to set the dip switches.

Rotary switch

Example: “0”

Rotary switch

Example: “0”

Setting

range

Type of switch

Indoor unit

address

0–63

Setting

example

IU AD×10 IU AD×1

Refrigerant

circuit

address

0–99

Setting

example

REF AD×10 REF

AD×1

(1) Indoor unit address

Rotary switch (IU AD ×1)...Factory setting “0”

Rotary switch (IU AD ×10)...Factory setting “0”

When connecting multiple indoor units to 1 refrigerant system,

set the address at IU AD SW as shown in the Table A

En-16

Example If 4 indoor units are connected.

RC AD SW

Indoor unit

Remote

controller

Indoor unit Indoor unit Indoor unit

RC AD SW

01234567

Address

01234567

RC AD SW

89ABCDEF

Address

8 9 10 11 12 13 14 15

7.2. Custom code setting

Selecting the custom code prevents the indoor unit mix-up.

(Up to 4 codes can be set.)

Perform the setting for both the indoor unit and the remote

controller.

A B C D

Indoor

unit

Remote

controller

Confusion

Code change

• Custom code setting for indoor unit

Set the DIP SW SET 3 SW1 , SW2, referring to the Table B.

Dip switch “SET3”

Table B

Custom code

A (Factory setting) B C D

DIP SW

SET 3 SW1

OFF ON OFF ON

DIP SW

SET 3 SW2

OFF OFF ON ON

CAUTION

• Do not operate any switches other than prescribed, as it can

cause the unit to operate improperly or malfunction.

(2) Refrigerant circuit address

Rotary switch (REF AD ×1)...Factory setting “0”

Rotary switch (REF AD ×10)...Factory setting “0”

In the case of multiple refrigerant systems, set REF AD SW

as shown in the Table A for each refrigerant system.

Set to the same refrigerant circuit address as the outdoor

unit.

• If working in an environment where the wireless remote

controller can be used, the addresses can also be set

using the remote controller.

• If setting the addresses using the wireless remote

controller, set the indoor unit address and refrigerant circuit

address to “00”.

(For information on setting using the wireless remote

controller.)

Table A

Address

Rotary

Switch

Setting

Address

Rotary

Switch

Setting

Refrigerant

circuit

REF AD SW

Indoor

unit

IU AD SW

× 10 × 1 × 10 × 1

00 0 00

101101

202202

303303

404404

505505

606606

707707

808808

909909

10 1 0 10 0 0

11 1 1 11 1 1

12 1 2 12 1 2

99 9 9 63 6 3

Do not set the indoor unit address (IU AD SW) at 64 to 99.

It may result failure.

(3) Remote controller address

Rotary switch (RC AD SW)...Factory setting “0”

When connecting multiple indoor units to 1 standard

wired remote controller, set the address at RC AD SW in

sequence from 0.

Setting

range

Type of switch

Remote

controller

address

0–15

Setting

example

RC AD

En-17

7.3. Function setting

• FUNCTION SETTING can be performed with the wired or

wireless remote controller.

(The remote controller is optional equipment)

• Refer to the wired or wireless remote controller manual for

detailed setting information. (Set IU AD ,REF AD SW to 0)

• Refer to “7.1. Setting the address.” for indoor unit address

and refrigerant circuit address settings.

• Turn the power of the indoor unit ON before starting the

setting.

* Turning on the power indoor units initializes EEV, so make

sure the piping air tight test and vacuuming have been

conducted before turning on the power.

* Also check again to make sure no wiring mistakes were

made before turning on the power.

Function details

Function

number

Setting

number

Default Details

Filter

indicator

interval

00 Default

○

Adjust the ﬁ lter cleaning interval

notiﬁ cation. If the notiﬁ cation

is too early, change to setting

01. If the notiﬁ cation is too late,

change to setting 02.

01 Longer

02 Shorter

Filter

indicator

action

00 Enable

○

Enable or disable the ﬁ lter

indicator. Setting 02 is for use

with a central remote controller.

01 Disable

Display

only on

central

remote

controller

Ceiling

airﬂ ow

00 Default

○

Regulate the airﬂ ow according

to the needs of the installation

location. When set to 01, the air

ﬂ ow will be stronger.

High

Ceiling

Vertical

airﬂ ow

direction

00 Default

○

Adjust the vertical airﬂ ow

direction. All airﬂ ow direction

louvers are adjusted together.

(Cassette type only)

01 Raise

Cool air

tem-

perature

trigger

00 Default

○

Adjust the cool air trigger

temperature. To lower the trigger

temperature, use setting 01. To

raise the trigger temperature, use

setting 02.

01 Adjust (1)

02 Adjust (2)

Hot air

tem-

perature

trigger

00 Default

○

Adjust the hot air trigger

temperature. To lower the trigger

temperature by 6 degrees C, use

setting 01. To lower the trigger

temperature by 4 degrees C, use

setting 02. To raise the trigger

temperature, use setting 03.

01 Adjust (1)

02 Adjust (2)

03 Adjust (3)

Auto

restart

00 Enable

Enable or disable automatic

system restart after a power

outage.

01 Disable

○

External

control

00 Start/Stop

○

Allow an external controller to

start or stop the system, or to

perform an emergency stop.

* If an emergency stop is

performed from an external

controller, all refrigerant

systems will be disabled.

* If forced stop is set, indoor

unit stops by the input to

the external input terminals,

and Start/Stop by a remote

controller is restricted.

Emergency

stop

Forced

stop

Error

report

target

00 All

○

Change the target for reporting

errors. Errors can either be

reported in all locations, or only

on the wired remote.

Display

only on

central

remote

controller

7.3.1. Button name and function

OPERATION indicator lamp (Green)

FILTER indicator lamp (Red)

TIMER indicator lamp (Orange)

MANUAL AUTO button

7.3.2. Checking the function settings

• Press and hold the “MANUAL AUTO” button on the indoor

unit for 3 seconds to check the function settings. It is

necessary to disconnect the power in order to return to

normal operation mode.

(1) Indoor unit and refrigerant address indication

Indication pattern

Indicator name

Indication pattern

Indoor unit

address

Refrigerant address

OPERATION indicator

lamp (Green)

Flash

(1.0s ON/1.0s OFF)

TIMER indicator

lamp (Orange)

Address: tens place

(0.5s ON/0.5s OFF)

FILTER indicator

lamp (Red)

Address: ones place

(0.5s ON/0.5s OFF)

En-18

• Indoor unit address example

(Example) ADDRESS : 24

OPERATION

indicator

lamp (Green)

TIMER

indicator lamp

(Orange)

FILTER

indicator lamp

(Red)

10 sec

1 cycle 12 sec

8 sec

OFF

0.5s

0.5s 0.5s 0.5s

0.5s

0.5s 0.5s

0.5s

0.5s 0.5s

OFF

• Refrigerant address example

(Example) ADDRESS : 30

OPERATION

indicator lamp

(Green)

TIMER

indicator lamp

(Orange)

FILTER

indicator lamp

(Red)

9 sec

1 cycle 12 sec

OFF

1.0s 1.0s 1.0s

1.0s 1.0s 1.0s 1.0s

0.5s

0.5s 0.5s 0.5s 0.5s

OFF

• Setting details

Function

number

Item Setting number

01 Indoor unit address 00~63

02 Refrigeration address 00~99

For use with a remote controller, set all rotary switches to

0, and refer to “7.1. Setting the address” for details.

All switches are set to 0 at the factory.

(2) Others

Indication pattern

Indicator Name Indication pattern

OPERATION indicator

lamp (Green)

Function number; tens place

(0.5s ON/0.5s OFF)

TIMER indicator lamp

(Orange)

Function number; ones place

(0.5s ON/0.5s OFF)

FILTER indicator lamp

(Red)

Setting number: (0 - 9) (0.5s

ON/0.5s OFF)

(Example) Function : 31, Setting number : 2

OPERATION

indicator lamp

(Green)

TIMER

indicator lamp

(Orange)

FILTER

indicator lamp

(Red)

11 sec

10 sec

9 sec

1 cycle 12 sec

OFF

0.5s

0.5s 0.5s 0.5s

OFF

8. DECORATION PANEL INSTALLA-

TION

8.1. Remove the intake grille

(1) Slide the 2 grille hook

Grille hook

(2) Open the intake grille and remove.

En-19

8.2. Install panel to indoor unit

(1) Install the decoration panel on the indoor unit.

“DRAIN” mark

“PIPE” mark

* Align the stamped marks on the decoration panel against the pipe

and the drain of the indoor unit.

CAUTION

Use only the supplied screws to install the decoration panel.

Indoor unit

Cealing

No gap between cealing and

decoration panel around entire

periphery

5 ~ 7

Decoration panel

Sealant

(2) Connect the connector.

Cable (louver): WHITE

Cable (display): WHITE

Cable (louver): RED

Indoor unit side

• Arrange the cables as illustrated below.

(3) Attach the connector cover.

Screw

Connector cover

8.3. Attach the intake grille

The installation is the reverse of “REMOVING THE INTAKE

GRILLE”.

The intake grille can be rotated and installed 4 ways to suit

the user’s preference.

CAUTION

• The louver angle cannot be changed if the power is not on,

(If moved by hand, it may be damaged.)

• The grille assembly is directional relative to the air conditioner

body.

• Install so that there is no gap between the grille assembly

and the air conditioner body.

9. TEST OPERATION

9.1.

Test operation using PCB (Outdoor unit)

• Refer to the Installation Manual for the outdoor unit if

the PCB for the outdoor unit is to be used for the test

operation.

9.2.

Test operation using Remote Controller

• Refer to the Installation Manual for the remote controller

to perform the test operation using the wireless remote

controller.

• When the air conditioner is being test run, the

OPERATION and TIMER indicator lamps ﬂ ash slowly at

the same time.

En-20

10. CHECK LIST

Pay special attention to the check items below when installing

the indoor unit(s). After installation is complete, be sure to

check the following check items again.

CHECK ITEMS

If not performed

correctly

CHECK

BOX

Has the indoor unit been

installed correctly?

Vibration, noise,

indoor unit may drop

Has there been a check

for gas leaks (refrigerant

pipes)?

No cooling, No

heating

Has heat insulation work

been completed?

Water leakage

Does water drain easily

from the indoor units?

Water leakage

Is the voltage of the

power source the same

as that indicated on the

label on the indoor unit?

No operation, heat or

burn damage

Are the wires and

pipes all connected

completely?

No operation, heat or

burn damage

Is the indoor unit

grounded?

Short circuit

Is the connection cable

the specified thickness?

No operation, heat or

burn damage

Are the inlets and outlets

free of any obstacles?

No cooling, No

heating

Does start and stop air

conditioner operation by

remote control unit or

external device?

No operation

After installation is

completed, has the

proper operation and

handling been explained

to the user?

11. ERROR CODES

If you use a wired type remote controller, error codes will

appear on the remote controller display. If you use a wireless

remote controller, the lamp on the photodetector unit will output

error codes by way of blinking patterns. See the lamp blinking

patterns and error codes in the table below.

Error display

Wired

Remote

Controller

Error code

Error contents

OPERATION

lamp (green)

TIMER

lamp

(orange)

FILTER

lamp

(red)

(1) (2)

Remote controller

communication

error

(1) (4)

Anomalous

network

communications

(1) (6)

Parallel

communication

error

(3) (1)

Power frequency

error

(3) (2)

Model

information

error/EEPROM

accession error

(4) (1)

Room

temperature

thermistor error

(4) (2)

Indoor heat

exchanger

temperature

thermistor error

(5) (1)

Indoor fan motor

error

(5) (3)

Drainage error

(9) (15)

Outdoor unit

error

Display mode

: 0.5s ON / 0.5s OFF

: 0.1s ON / 0.1s OFF

( ) : Number of ﬂ ashing

Wired Remote Controller Display

Error code

Fujitsu AUXB24LALH Installation guide

Brand: Fujitsu

Model: AUXB24LALH

Category: Split-system air conditioners

Type: Installation guide

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